Process for the preparation of 4,4'-dihydroxy-3,3',5,5'-tetraalk

Details Process for the preparation of 4,4'-dihydroxy-3,3',5,5'-tetraalk Process for the preparation of 4,4'-dihydroxy-3,3',5,5'-tetraalk

1977-10-11

1982-03-09

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568728, C07C 3916

Patent

active

043190537

ABSTRACT:
A process for the preparation of a 4,4'-dihydroxy-3,3',5,5'-tetraalkyl-diphenylalkane by reacting a 2,6-dialkyl phenol with a ketone in the presence of an acid organic ion exchanger wherein said acid ion exchanger is a macroporous resin with an average pore diameter of at least 300 A.

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patent: 3242219 (1966-03-01), Farnham et al.
patent: 3242220 (1966-03-01), Apel et al.
patent: 3394089 (1968-07-01), McNutt
patent: 3491157 (1970-01-01), Dietzler et al.
patent: 3634341 (1972-01-01), Gammell et al.
patent: 4045379 (1977-08-01), Kwantes et al.
Reinicker, "A.I.Ch.E.", vol. 20, No. 5, pp. 933-939, (1974).
"Amberlite 200, Technical Notes", Rohm & Haas Co., (Mar. 1960), Applications for Amberlite 200, ibid, (Apr. 1962).
"Dowex Fine Mesh Resins", Dow Chemical Co., Publication No. 2.

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